XU Ya-lin, LI Hai-tao, ZHANG Jian-ping, WANG Yong-zhao, ZHAO Yong-xiang
(1.College of Chemistry and Chemical Engineering, Shanxi University, Engineering Research Center for Fine Chemicals of Ministry of Education, Shanxi Taiyuan 030006, China
2. Shanxi San wei Group Co.Ltd., Shanxi Hongtong 041603, China)
Abstract: Ni/γ-Al2O3 catalyst with 17% nickel loading was prepared by impregnation method. The Ni/γ-Al2O3 catalyst was treated under hydrothermal condition for different time at 180 °C and 4 MPa H2 pressure. The structure of the fresh and treated Ni/Al2O3 catalysts were characterized by XRD、TG、H2-TPR and N2 physisorption. The effect of hydrothermal treatment on the performance of the Ni/γ-Al2O3 catalyst in the hydrogenation of 1,4-butynediol was investigated. The results indicated that the hydrothermal treatment under H2 atmosphere resulted in the hydration of support γ-Al2O3 to boehmite.The crystallinity of the boehmite increased with the extension of the hydrothermal treatment time. Moreover, the hydration of support γ-Al2O3 caused the obvious aggregation of Ni crystallite, and the decrease of both specific surface area and pore volume, which led to the decay of the catalytic activity.
Key words: Ni/γ-Al2O3 catalyst; hydrothermal treatment under H2 atmosphere; hydration; boehmite; 1,4-butynediol
E-mail: yxzhao@sxu.edu.cn
Journal of Molecular Catalysis, Vol. 24, Issue 2, 2010, 112-116
